MF-Ep21-The Seventh Adventure-
#21 of The Monster Fighters
I doubt this would be the end?
The team figures out that the high school they go to is attached to an old museum that was sealed off. They found this out by doing research about the school thanks to Axel playing his part. They ended up seemingly taking on the final boss in a rather dramatic way and it felt... very anti-climatic as they were so ready to take on the mastermind. However once the team leaves Axel begins to gather information silently thinking that something was off and Adam had noticed something was off as well but no one else on the team noticed it.